My wife averages 17MPG in her 300c SRT8 sled. Think it's a little lighter than the Charger. Don't care for the CHarger so much. Had no headroom in the back.
Of course your vette would get better mileage. It's 6-700lbs+ at least, lighter!
We even lowered the 300c more and you definitely have to watch the curbs on the front. So far so good!
I think GM is starting to get the picture regarding a re-focus on cars.
The 2008 Pontiac G8 looks great. RWD and 360+ HP is just what the Dr. ordered. New Impala SS, new 2009 Camaro, revised Silverado in 2007.
I have more hope for GM than I do for FOrd and Chrysler.